// OFFIS Automation Framework
// Copyright (C) 2013-2018 OFFIS e.V.
// 
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#include "portobserver.h"

PortObserver::PortObserver(int skip) : mSkip(skip)
{
}

void PortObserver::setValue(const QVariant &val)
{
    QMutexLocker lock(&mMutex);
    mValue = val;
    if(--mSkip < 0)
        mWait.wakeAll();
}

bool PortObserver::wait(unsigned long timeout, QVariant& var)
{
    QMutexLocker lock(&mMutex);
    if(!mWait.wait(&mMutex, timeout))
        return false;
    var = mValue;
    return true;
}
